Improvement in cooking-stoves and ranges



s sheetS--sh'eet 3.

w. T nx-:ADwELLg Cqoking Stove and Bange.

Patented March 23, |875.

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ATTORN EYS THE GRAPHIC C0.PWCIVI'0.LITH.39 @41 PARK PLAGEJLY.

` rTED STATES WILLIAM B. TREADWELL, OF ALBANY, NEW YORK.

IMPROVEMENT lN COOKING-STOVES AND RANGES.

Sp ecitication forming part of Letters Patent No. 161,180, dated March 23, 1875; application tiled January 9, 1875.

To all whom it may concern:

Be it known that I, WILLIAM B. TREAD- WELL, of Albany, in the county of Albany and State of New York, have invented a new and valuable Improvement in Cooking-Stoves and Ranges; and I do hereby declare that the following s a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of ret'erence marked thereon.

Figure 1 of the drawing is a representation of a vertical detail section of my stove, and Fig. 2 is a side detail view of the same. Fig. 3 is a transverse sectional detail view, and

Fig. 4 a vertical longitudinal sectional View.

This inventionhas relation to cooking-stoves and ranges having a front feed-opening for supplying' fuel to the lire-chamber; and the nature of my invention consist-s in constructing the five walls which are exposed to the direct heat in the tire-chamber with air-circulating spaces in them, which spaces communicate with each other, and are provided with registers for regulating the admission of air. The air, after it is highly heated, is directed into the lire-chamber above and below the grate, for supplying oxygen to the incandescent fuel, as will be`fully understood from the following description.

In the annexed drawings, A designates the lire-chamber of the stove; B, the ash-pit; G, the tlue between the top plate of the oven and the top plate of the stove; and D D are two ovens, with a line-space between them. E E1 E2 E3 designate the four sides surrounding the lire-chamber A, each one of which is composed of double walls, forming air-circulatin g spaces .between them. The outer walls of the two sides E2 E3 have registers F F applied to them, for admitting air into the circulatingspaces,

vand allowing such admission to be regulated.

The inner side or iire-back E1 has openings a a through its front wall, which openings are so formed that they direct the escaping air-currents downward into the lire-chamber at 'and near the point where the flame and heated products of combustion pass over into the ue C.

At the lower end of the front air-circulating side E holes b are made, which afford outlets for air into the` ash-pit, from which latter the air rises through the grate J into the lirechamber.-

It will thus be seen that I introduce air below the grate, as wel] as above the grate.

The four air-spaces above described communicate with each other, and they also communicate with a double-wall air-chamber, G, which forms that portion of the front wall of the stove which is above the lire-chamber. (Shown in Fig. l.) H designates the door to the feedopening, the ends of which are hollow, and communicate with the external atmosphere by means of suitable'openings. Between these hollow ends mica is applied by securing the sheet between two frames, and conning these frames to the door, so as to leave spaces for the entrance of air.

Fig. et on Sheet 3 shows my invention applied to a stove having iues entirely around the ovens, so that when a damper, R, is in a horizontal positionthe products of combustion will descend through flue N, and pass chie'iy beneath the upper oven. When the damper It is in a vertical position the products of coinbustion will pass both above and below the ovens.

P designates a chamber, which is applied to the upper front an gie of the oven, and which aiords a passage for air and a protector for this part of the oven.

-What I claim as new, and desire to secure by Letters Patent, is

The air-chamber Gr above the tire-chamber, and communicating with the end air-chambers E2 E3. provided with registers F, in combination with the front air-chamber E, having at its bottom perforations b, and back air-chamber El, provided with air-passages a a, substantially as described.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

WILLIAM B. TREADWELL.

Witnesses:

J osEPH H. SLoAN, ROBERT H. BULLocK. 

